CN112643294A - Precise machining method for spiral groove in multi-wire large-lead narrow deep cavity structure - Google Patents
Precise machining method for spiral groove in multi-wire large-lead narrow deep cavity structure Download PDFInfo
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- CN112643294A CN112643294A CN202011459834.0A CN202011459834A CN112643294A CN 112643294 A CN112643294 A CN 112643294A CN 202011459834 A CN202011459834 A CN 202011459834A CN 112643294 A CN112643294 A CN 112643294A
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- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
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- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention relates to a precise machining method for a spiral groove in a multi-wire large-lead narrow deep cavity structure. The invention realizes the precision machining of the spiral groove in the original multi-wire large-lead narrow deep cavity structure which can not be subjected to numerical milling; the radius compensation processing can be carried out, the processing precision is high, and the quality is stable; the manufacturing of consumable tools such as electrodes and the like is reduced, the cost is low, and the efficiency is high. The process method is simple and reliable, convenient to implement, strong in universality and easy to popularize and use.
Description
Technical Field
The invention belongs to the field of spiral groove machining, particularly relates to a precision machining method for a spiral groove in a multi-line large-lead narrow deep cavity structure, and particularly relates to a high-precision machining process method for the spiral groove structure in the narrow deep cavity multi-line large-lead large-cavity structure, wherein the small diameter of the spiral groove structure is smaller than 10mm, the groove width of the spiral groove structure is smaller than 3mm, and the width-depth ratio of the spiral groove structure is larger than 15.
Background
The conventional machining method of the conventional spiral groove structure mainly comprises three modes of turning, numerical milling and electric spark. However, for the multi-wire large-lead narrow spiral groove, the large lead and the narrow deep cavity structure with the small diameter smaller than 10mm enable the lathe to cut only by adopting a low rotating speed, and the cutting precision and the quality of the cut surface are low; the narrow deep cavity structure limits the accessible space of the milling cutter, so that the multi-milling machining interferes with over-cutting and cannot be machined; the electric spark mode can realize the processing of a spiral groove with a deep cavity structure, but the surface quality is low, the meshing precision of parts is influenced, a large number of electrodes are consumed for processing, the cost is high, and the efficiency is low.
Disclosure of Invention
The invention provides a precise machining method for a spiral groove in a multi-line large-lead narrow deep cavity structure, which solves the defects in the prior art.
In order to solve the technical problems, the invention provides a method for precisely machining a spiral groove in a multi-wire large-lead narrow deep cavity structure, which is characterized by comprising the following steps of: the specific implementation steps are as follows:
(1) designing a special slotting cutter according to the tooth shape size of the inner spiral groove, wherein the front cutter face of the cutter is consistent with the tooth shape width size, the diameter of a cutter handle of a slotting cutter part is smaller than the small diameter of the spiral groove, and the length of the cutter handle is larger than the depth of the spiral groove;
(2) processing a part on a turning and milling combined machining center machine tool, finishing by utilizing a thread instruction of a numerical control system of the machine tool, adjusting the size of a cutter for multiple times according to the precision requirement of a spiral groove, cutting for multiple times according to cutting parameters of feed, gradually processing each inner spiral groove on the part to the size, and processing only one spiral groove at a time;
(3) and adjusting the radius compensation value according to the machining precision, and realizing the precise plunge milling machining of the spiral groove in the multi-wire large-lead narrow deep cavity structure by utilizing the linear motion of the main shaft of the turning and milling composite machining center and the rotary composite motion of the rotary table.
Has the advantages that: the special slotting cutter is manufactured according to the tooth shape and the size of the spiral groove, and the precision slotting machining of the spiral groove in the multi-line large-lead narrow deep cavity structure is realized by programming a thread machining numerical control program and utilizing the linear motion of a main shaft of a turning and milling composite machining center and the rotary composite motion of a rotary table. The invention realizes the precision machining of the spiral groove in the original multi-wire large-lead narrow deep cavity structure which can not be subjected to numerical milling; the radius compensation processing can be carried out, the processing precision is high, and the quality is stable; the manufacturing of consumable tools such as electrodes and the like is reduced, the cost is low, and the efficiency is high. The process method is simple and reliable, convenient to implement, strong in universality and easy to popularize and use.
Drawings
FIG. 1 is a work flow diagram of the present invention;
FIG. 2 is a schematic view of an exemplary component;
FIG. 3 is a schematic view of a helical slot slotting cutter in a typical part.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention is provided.
The invention provides a precise machining method for a spiral groove in a multi-line large-lead narrow deep cavity structure, which is suitable for precise machining of the spiral groove structure in the narrow deep cavity with the small diameter size of less than 10mm, the groove width of less than 3mm and the width-depth ratio of more than 15, and fig. 2 is a typical part schematic diagram of the spiral groove in the multi-line large-lead narrow deep cavity structure, wherein the lead of the spiral groove is 80mm, the groove width is 1.5mm, 6 spiral grooves are uniformly distributed along the circumferential direction, and the precise machining method comprises the following specific implementation steps:
(1) plunge milling cutter design
According to the tooth shape size of the inner spiral groove, a special slotting cutter is designed, wherein the front cutter face of the cutter is consistent with the tooth shape width size, the diameter of a cutter handle of the slotting cutter part is smaller than the small diameter of the spiral groove, and the length of the cutter handle is larger than the depth of the spiral groove.
The specific plunge mill design for the exemplary part shown in fig. 2 is shown in fig. 3.
(2) Plunge milling programming
Based on a turning and milling composite center machine tool, UG (Unigraphics) and other numerical control machining programming software is utilized to compile a slotting and milling machining program of the spiral groove, and radius compensation is carried out according to the size precision of the spiral groove.
The step can also be completed by utilizing the thread instruction of the numerical control system of the machine tool, the size of the cutter can be adjusted for many times according to the precision requirement of the spiral groove, and the cutting is carried out for many times according to the cutting parameters of the feed, so that only one spiral groove is processed at one time;
(3) numerical control machining
And (4) processing the part on a turning and milling combined machining center machine tool, adjusting the radius compensation value according to the processing precision, and gradually processing each internal spiral groove on the part to the size.
The precise plunge milling of the spiral groove in the multi-line large-lead narrow deep cavity structure is realized by utilizing the linear motion of the main shaft of the turning and milling composite machining center and the rotary composite motion of the rotary table.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A precise machining method for a spiral groove in a multi-wire large-lead narrow deep cavity structure is characterized by comprising the following steps of: the specific implementation steps are as follows:
(1) designing a special slotting cutter according to the tooth shape size of the inner spiral groove, wherein the front cutter face of the cutter is consistent with the tooth shape width size, the diameter of a cutter handle of a slotting cutter part is smaller than the small diameter of the spiral groove, and the length of the cutter handle is larger than the depth of the spiral groove;
(2) processing a part on a turning and milling combined machining center machine tool, finishing by utilizing a thread instruction of a numerical control system of the machine tool, adjusting the size of a cutter for multiple times according to the precision requirement of a spiral groove, cutting for multiple times according to cutting parameters of feed, gradually processing each inner spiral groove on the part to the size, and processing only one spiral groove at a time;
(3) and adjusting the radius compensation value according to the machining precision, and realizing the precise plunge milling machining of the spiral groove in the multi-wire large-lead narrow deep cavity structure by utilizing the linear motion of the main shaft of the turning and milling composite machining center and the rotary composite motion of the rotary table.
2. The precision machining method for the spiral groove in the multi-line large-lead narrow deep-cavity structure according to claim 1, characterized in that: the spiral groove structure is suitable for a narrow deep cavity multi-line large-lead inner spiral groove structure with the small diameter dimension smaller than 10mm, the groove width smaller than 3mm and the width-depth ratio larger than 15.
3. The precision machining method for the spiral groove in the multi-line large-lead narrow deep-cavity structure according to claim 1, characterized in that: the spiral groove part is suitable for the spiral groove parts in the deep cavity structure, wherein the lead of the spiral groove is 80mm, the width of the spiral groove is 1.5mm, the number of the spiral groove parts is 6 in total, and the spiral groove parts are uniformly distributed along the circumferential direction.
4. The precision machining method for the spiral groove in the multi-line large-lead narrow deep-cavity structure according to claim 1, characterized in that: in the step (2), a slotting and milling program of the spiral groove can be programmed based on the turning and milling composite center machine tool, and radius compensation is carried out according to the size precision of the spiral groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011459834.0A CN112643294A (en) | 2020-12-11 | 2020-12-11 | Precise machining method for spiral groove in multi-wire large-lead narrow deep cavity structure |
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| CN202011459834.0A CN112643294A (en) | 2020-12-11 | 2020-12-11 | Precise machining method for spiral groove in multi-wire large-lead narrow deep cavity structure |
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| US20030231934A1 (en) * | 2002-06-13 | 2003-12-18 | Kienzle Richard D. | Thread milling tool |
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| CN102107303A (en) * | 2010-12-09 | 2011-06-29 | 遵义精星航天电器有限责任公司 | Method for processing inner hole helix groove |
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| US20140334888A1 (en) * | 2013-05-07 | 2014-11-13 | Dc Swiss Sa | Method for obtaining a complete threading profile by milling and milling tool |
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Application publication date: 20210413 |